How it Works (or why NOT to be afraid of FOSE)

FOSE does not edit your Fallout3.exe in any way, and as such is not dangerous to use at all. It works by running the .exe and then patching it while it is in memory in order to add in new scripting functions.

How to use FOSE with the GECK

Scripts written with FOSE's new functions must be created via the GECK after it's been loaded through fose_loader.exe. To use FOSE with the GECK:

FOSE v1.2 Beta 2 adds support for the German no-gore version of 1.7.0.3.

Incompatible Versions

Build 1.0.0.12: FOSE is not compatible with the original, unpatched DVD or Steam version.

Copy Protected Versions: the following versions of Fallout 3 use copy protection schemes to encrypt the Fallout3.exe, thus making it illegal to decrypt:

Direct2Drive (D2D) version

Polish DVD version w/ SafeDisc protection

Russian DVD version w/ StarForce protection

Games for Windows Live (GFWL): when running Fallout 3 via fose_loader.exe, GFWL will be disabled automatically. GFWL functions as an anti-cheat mechanism, so it disables itself if it detects any in-memory modifications to the executable, despite the fact that Fallout has no multiplayer component. Since GFWL cannot tell the difference between the modifications we make and the modifications a cheating program would make, we will probably never be directly compatible. To download DLC and updates, simply launch Fallout normally.

A note on DLC: by loading Fallout3.exe instead of fose_loader.exe, you can still download DLC and updates through Live. If you have DLC, you will need to move the DLC files into the Data directory located in the Fallout 3 installation folder.

A note on saved games: since Live stores save files in a separate folder when active, users will need to move their save games from their user profile folder in the My Documents folder to the main Saves folder in order to access them.